XML 92 R76.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Loans Payable - Summary of Gain or Loss Upon Extinguishment Allocation (Detail) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2015
Extinguishment of Debt [Line Items] |  |
Difference to APIC |  | $ 5,611,907
Note 2 - Monaco 2016 [Member] |  |
Extinguishment of Debt [Line Items] |  |
Difference to APIC | $ 1,211,811 |
Note 2 - Monaco 2016 [Member] | Derivative Liabilities (Share Purchase Options) [Member] |  |
Extinguishment of Debt [Line Items] |  |
Difference to APIC | 1,456,825 |
Note 2 - Monaco 2016 [Member] | Monaco Loan (Old Debt) [Member] |  |
Extinguishment of Debt [Line Items] |  |
Difference to APIC | 3,372,844 |
Note 2 - Monaco 2016 [Member] | Monaco Loan (New Debt) [Member] |  |
Extinguishment of Debt [Line Items] |  |
Difference to APIC | (2,800,000) |
Paid-in Capital [Member] | Note 2 - Monaco 2016 [Member] | Premium [Member] |  |
Extinguishment of Debt [Line Items] |  |
Difference to APIC | $ (817,858) |

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ExtinguishmentOfDebtLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629 + Details
Name: | us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=omex_NoteTwoMonacoTwoThousandSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ExtinguishmentOfDebtAxis=omex_MonacoLoanOldDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ExtinguishmentOfDebtAxis=omex_MonacoLoanNewDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_AdditionalPaidInCapitalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ExtinguishmentOfDebtAxis=omex_DebtPremiumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |